JP2023008910A - composite web - Google Patents

Abstract

To manufacture webs for sanitary articles that are more economical while ensuring wearer comfort.SOLUTION: The invention provides a composite web (1) including: a first continuous web (11); and at least one molded segment (12S) having at least one protrusion (4) and a base portion (5) at least partly delimiting the protrusion (4), the molded segment (12S) being obtained from a second continuous web (12), the molded segment (12S) being joined to the first continuous web (11) by the base portion (5), the first continuous web (11) and the molded segment (12S) delimiting at least one cavity (7) at the protrusion (5).SELECTED DRAWING: Figure 1

Description

The present invention relates to a composite web used for producing absorbent sanitary articles, absorbent sanitary articles comprising said composite web, a method for producing said composite web and a unit for shaping said composite web.

Generally speaking, absorbent sanitary articles essentially comprise a topsheet, a backsheet and an absorbent core disposed between the topsheet and the backsheet. The topsheet is usually the layer that is in contact with the wearer and the backsheet is the outer layer of the article.

Previously known are absorbent articles such as, for example, those shown in document WO2016040091A1, which are tertiary with cell-like projections obtained by deforming a web using embossing techniques. A topsheet comprising what is known as a base layer is provided. The foam makes it possible to improve the comfort of the wearer of the absorbent article.

To ensure that the embossed sheet maintains the desired shape, the topsheet usually also comprises a second or base layer joined to the embossed web.

Disadvantageously, the production of webs for sanitary articles comprising a topsheet comprising a continuous three-dimensional layer applied to a continuous base layer involves large amounts of material and high production costs.

There is a need to produce webs for sanitary articles that are more economical while ensuring wearer comfort.

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to fulfilling the above needs.

At least the specified objects are achieved by a composite web, an article, a method for manufacturing said composite web and a unit for shaping said composite web according to the independent claims.

The dependent claims correspond to different possible embodiments of the invention.

According to one aspect, the present disclosure relates to composite webs, particularly composite webs used in the manufacture of absorbent sanitary articles, such as, for example, diapers.

According to one aspect, the composite web comprises a first continuous web that acts as a support or foundation.

According to one aspect, the composite web comprises at least one molded segment. Preferably the shaped segments are obtained from a second continuous web.

According to one aspect, the shaped segment has at least one projection or projecting portion and a base that at least partially delimits the projection itself.

According to one aspect, the shaped portion is joined to the first continuous web by a base.

According to one aspect, the first continuous web and molded portion delimit at least one cavity at the projection.

According to one aspect, the base is outside the projection.

According to one aspect, the protrusions are in contact with the wearer and the first web is in contact with the absorbent core in the composite web, particularly in its segments when used in sanitary articles.

In other words, the protrusion projects from the base toward the wearer. This allows for enhanced comfort in absorbent articles incorporating composite webs.

According to one aspect, the molded segment comprises a plurality of projections delimited by a plurality of bases.

According to one aspect, the first continuous web and molded portion delimit a plurality of cavities at the protrusions.

According to one aspect, the plurality of projections define a motif on the molded segment.

In other words, the plurality of protrusions define a pattern on the molded segment.

In one example, the projections can have a bubble shape.

In another example, the protrusions can have a wavy shape.

Other examples of shapes that protrusions can have are as follows. circle, rhombus, oval, teardrop, oval, heart, and triangle.

Advantageously, the protrusions improve the comfort of the wearer in contact therewith.

According to one aspect, the composite web comprises a plurality of shaped segments joined to a first continuous web.

Advantageously, the joining of the first continuous web to the forming segments allows the deformation (i.e. forming) imparted to the forming segments to be fixed at least by the projections.

Advantageously, the use of molded segments joined to a first continuous web that maintains their shape reduces the amount of material required to manufacture a comfortable topsheet. becomes possible.

In particular, the use of molded segments instead of fully molded continuous webs makes it possible to reduce the amount of material required.

Advantageously, reducing the amount of material used allows for lower manufacturing costs.

According to one aspect, the shaped segment is shaped using an embossing technique.

For example, a continuous web is cut (using known slip and cut methods) to obtain spaced segments of the web, which are then divided into two sections with male and female portions. It can be shaped by passing between two rollers to obtain a shaped segment.

For example, a continuous web can be formed to obtain an embossed web, and then the continuous web is cut (eg, using known slip-and-cut methods) to space apart the first webs. of molded segments can be obtained.

According to one aspect, the shaped segment comprises a nonwoven.

According to one aspect, the first web comprises a nonwoven.

"Nonwoven" means a material whose fibers are randomly oriented.

The first web and/or molded segment may comprise various materials such as, for example, carded fibers, nonwovens, cellulosic fibers, viscose, polyester, cotton, polyamide, and microfibers. .

According to one aspect, the composite web comprises at least one weld. Advantageously, the weld allows the base of the shaped segment and the first continuous web to be joined together.

For example, the weld can be achieved by thermal or thermomechanical or ultrasonic welding.

According to one aspect, the composite web comprises at least one adhesive layer disposed between the base of the molded segments and the first continuous web.

Advantageously, the adhesive layer allows the base of the shaped segment and the first continuous web to be joined together.

According to one aspect, the present description is directed essentially to an absorbent article comprising a topsheet, an impermeable backsheet and an absorbent core disposed between the topsheet and the backsheet.

According to one aspect, the topsheet comprises segments of a composite web according to one or more of the above aspects.

According to one aspect, the first continuous web is positioned between the shaped segments and the absorbent core.

According to one aspect, an absorbent distribution layer (ADL) may be provided between the first continuous web and the absorbent core.

Advantageously, the presence of ADL allows for improved movement of liquids through the topsheet that are collected in the absorbent core.

For example, the molded segments may be formed in what is known as a bubble topsheet, i.e., a topsheet that has a bubbled portion to enhance the wearer's comfort.

Advantageously, by manufacturing an absorbent article, the topsheet of which is manufactured according to one or more of the above aspects, the amount of material required to manufacture the absorbent article can be reduced.

Advantageously, by reducing the amount of material required to manufacture an article, manufacturing costs can be reduced.

According to one aspect, the first continuous web used for the topsheet which is joined to the base of the shaped segments ensures that the segments maintain the required shape.

Advantageously, ensuring that the projections of the molded segment maintain their shape enhances the comfort of the wearer whose skin will be in contact with the projections of the sanitary article.

This specification relates to a method of making composite webs, particularly absorbent sanitary articles, according to one or more of the above aspects.

According to one aspect, the method includes providing a first continuous web.

According to one aspect, the method includes providing at least one molded segment of the second continuous web.

According to one aspect, the shaped segment has at least one protrusion at least partially delimited by the base.

According to one aspect, the method includes joining a molded segment to a first continuous web at a base to define at least one cavity between the molded segment and the first continuous web at a projection. .

Advantageously, joining the first continuous web to the base of the forming segment makes it possible to ensure that the projections maintain their shape.

According to one aspect, the method includes shaping segments of the second continuous web to obtain shaped segments.

Advantageously, shaping the segments allows the formation of projections that improve the wearer's comfort of the final product comprising part of the shaped web.

According to one aspect, the molding step is performed using an embossing technique.

For example, the molding can basically consist of a first roller with a plurality of suction recesses on its periphery and a second roller with a plurality of teeth on its periphery that are substantially shaped to match the plurality of suction recesses. rollers.

According to one aspect, the method includes providing a second continuous web and cutting the second continuous web to space apart segments of the second continuous web.

According to one aspect, the step of cutting to obtain segments of the second web at intervals is performed using, for example, a slip and cut method.

According to one aspect, joining the shaped segments to the first continuous web includes welding the shaped segments at least at the base to the first continuous web.

Welding can be, for example, thermal welding, thermomechanical welding, or ultrasonic welding.

According to one aspect, joining the molded segments to the first continuous web includes disposing at least one adhesive layer between the molded segments and the first continuous web.

According to one aspect, joining the shaped segments to the first continuous web includes joining a series of discrete shaped segments to the first continuous web.

Advantageously, joining the shaped segments to the first continuous web allows fixing and maintaining the 3D pattern defined by the protrusions imparted to the segments.

Advantageously, maintaining the 3D pattern molded into the molded segments ensures increased comfort for the wearer whose skin will be in contact with the protrusions.

Advantageously, joining formed segments instead of a continuous formed web makes it possible to reduce the amount of material used in the manufacture of sanitary articles.

Advantageously, using less material allows for reduced manufacturing costs.

This specification relates to forming units for producing composite webs according to one or more of the above aspects.

According to one aspect, the forming unit comprises an applicator device configured to join the formed segments to the first continuous web.

According to one aspect, the shaped segment has a pattern comprising at least one protrusion and one base.

According to one aspect, the molding unit comprises a manufacturing device for manufacturing the molded segments.

According to one aspect, the manufacturing device includes a forming device for forming the pattern in the segments and cutting the second continuous web to produce at least one segment or a plurality of segments of the second continuous web. A cutting and spacing device for spacing.

For example, the forming device can be arranged downstream of the cutting and spacing device in the feed direction of the second continuous web to form the pattern in one segment or multiple segments.

In one example, the forming device may be arranged upstream of the cutting and spacing device in the feed direction of the second continuous web to form the pattern on the second continuous web.

The forming device is, for example, an embossing device.

According to one aspect, the forming apparatus comprises a first drum and a second drum positioned relative to each other to define a gap through which the second web or segments of the second web can pass. Prepare.

Advantageously, the molding device enables the formation of a three-dimensional pattern of projections of molded segments whereby the wearer's skin comes into contact with the molded segments of the sanitary article worn. enhances wearer comfort.

According to one aspect, the second web or segments of the second web are formed by conveying them between drums of a forming apparatus.

According to one aspect, the axes of the drums of the forming apparatus are parallel to each other.

According to one aspect, the first drum is rotatable about its axis, for example counterclockwise, and the second drum is rotatable about its axis, for example clockwise (and vice versa). similar).

According to one aspect, the applicator device is arranged downstream of the production device in the feeding direction of the shaped segments.

According to one aspect, the applicator device is configured to join the shaped segment at the base to the first continuous web.

According to one aspect, the cutting and spacing device comprises an anvil and a rotating knife acting in conjunction with the anvil.

According to one aspect, the cutting and spacing device, in particular the anvil, is configured to space the segments of the second web.

According to one aspect, the segments are cut and spaced apart, for example, using a slip and cut method on the anvil itself.

According to one aspect, the spaced-apart segments continue along their feed path and pass through gaps in the forming apparatus to obtain formed segments of the second web.

According to one aspect, the applicator device comprises at least one applicator drum in contact with the first drum or the second drum.

According to one aspect, the applicator device comprises a welder for welding the shaped segments to the first continuous web by thermal or thermomechanical welding.

For example, the welding is ultrasonic welding.

According to one aspect, the applicator device comprises a glue dispenser, which is arranged downstream of the production device in the feed direction of the shaped segments.

Advantageously, the applicator device makes it possible to maintain the shape that the molding device imparted to the molding segment.

According to one aspect, the first and second drums of the forming apparatus are each shaped to fit one another and impart a 3D pattern (defined by protrusions) to the forming segments as the web passes through the gap. A male portion and a female portion configured to be molded.

The male and female portions are shaped according to the shape the projection is intended to have.

The main features of the invention will become more apparent from the following detailed description, with reference to the accompanying drawings, which illustrate preferred, non-limiting embodiments of the invention.
Figure 2 shows a detail of a composite web according to the specification in schematic cross-section; FIG. 2 shows details of a composite web according to the disclosure in schematic perspective view; FIG. 2 shows details of a composite web according to the disclosure in schematic perspective view; 1 shows an absorbent article according to the specification in a schematic plan view; FIG. 1 shows in schematic front view a unit for forming a composite web according to the specification; FIG. FIG. 1 shows in schematic form details of a unit for forming a composite web according to the specification; FIG. 1 shows in schematic form details of a unit for forming a composite web according to the specification; 1 shows an absorbent article according to the specification in schematic cross-section.

Referring to the accompanying drawings, and in particular FIG. 1, numeral 1 designates a composite web according to the specification.

The composite web 1 is preferably intended for the manufacture of absorbent sanitary articles such as diapers, an example of an absorbent sanitary article labeled 200 and shown in FIG.

As explained in more detail below, the composite web 1 makes it possible to produce what are known as three-dimensional or 3D topsheets for diapers.

The composite web 1 comprises a first continuous web 11 and a shaped segment 12S, ie a segment imprinted with a pattern M.

Shaped segment 12S is obtained from segment 12L of second continuous web 12 . Segment 12S has a first side 12A and a second side 12B.

Basically, the molded segment 12S has at least one protrusion 4, at least one protrusion 4 at least partially delimited by the outer base 5 of the protrusion 4. As shown in FIG.

The protrusion 4 protrudes from the first surface 12A with respect to the base 5. As shown in FIG.

Referring to the accompanying drawings, the cross-section of the composite web 1 is greatly enlarged in the Figures in order to make this description easier to understand.

The shaped segment 12S defines what is known as the 3D portion of the topsheet, which is formed to improve the comfort of the diaper by virtue of the projections 4.

Segment 12S thus defines the forming portion 3 of composite web 1 .

First continuous web 11 has a first side 11A and a second side 11B.

The first surface 11A is joined by the base 5 to the second surface 12B of the segment 12S.

The second side 11B is preferably in contact with the absorbent core 203 of the absorbent hygiene product 200 or ADL, if any.

Composite web 1 has at least one cavity 7 delimited at protrusion 4 by molded segment 12S and web 11 .

In other words, the extent of the cavity 7 is defined by the second surface 12B of the segment 12S at the projection 4 and the first surface 11A of the first continuous web 11. FIG.

In one embodiment, the segment 12S has a plurality of protrusions 4 on its first surface 12A delimited by a plurality of bases 5 surrounding the protrusions 4 .

In this embodiment, the composite web 1 has a plurality of cavities 7 delimited (at the plurality of projections 4) by the segments 12S and the first continuous web 11. FIG.

A plurality of protrusions 4 define a motif M, ie a pattern that will constitute the three-dimensional part of the topsheet.

When the wearer puts on the absorbent hygiene product 200 comprising the composite web 1, it is in contact with the projections present on the first surface 12A of the segments 12S.

Advantageously, the protrusions 4 improve the comfort of the wearer who wears the product and contacts the protrusions.

In one embodiment, shaped segment 12S comprises a non-woven fabric.

In one embodiment, molded segment 12S comprises polymer fibers.

In one embodiment, first continuous web 11 comprises a nonwoven.

In one embodiment, first continuous web 11 is a liquid absorbent distribution layer (ADL).

The shape imparted to the segments 12S by molding is maintained by bonding the segments 12S to the first continuous web 11. FIG.

In one embodiment, composite web 1 comprises a series of discrete segments 12S joined to first web 11. FIG.

The composite web 1 has a series of shaped portions 3 (in segments 12 S) which are maintained in the required shape by a first continuous web 11 .

In an absorbent article 200 using a segment of the web 1 as a topsheet, the segment will have a shaped portion 3 at the shaped segment 12S that enhances the wearer's comfort.

In one embodiment, the protrusion 4 of the segment 12S has a bubble shape, for example as shown in FIG.

In one embodiment, the protrusions 4 of the segments 12S have an undulating shape, eg, as shown in FIG.

In one embodiment, the corrugations molded into the segments 12S comprise corrugations having crests 4A that are parallel to the primary direction of deployment of the segments 12S.

In one embodiment, the corrugations molded into the segments 12S comprise corrugations having crests 4A transverse to the primary direction of deployment of the segments 12S.

The protrusions 4 may have different shapes. For example, it may have a diamond shape, a heart shape, an oval shape, a teardrop shape, an oval shape, a shamrock shape, and the like.

Segment 12S and first web 11 are joined, for example, by weld 9 shown in FIG. 1 and/or by adhesive layer 8 shown in FIG.

In one embodiment, segment 12S and web 11 are joined by welding, particularly heat welding.

In one embodiment, segment 12S and web 11 are joined by ultrasonic welding.

Adhesive layer 8 is disposed between segment 12S and continuous web 11, preferably between base 5 delimiting protrusion 4 and web 11. FIG.

This specification relates to an absorbent article indicated by reference number 200, for example shown in FIG.

The absorbent article 200, which will be described only so far as is necessary to understand the present invention, consists essentially of a topsheet 201, an impermeable backsheet 202 and a topsheet 201 and an impermeable backsheet 202 disposed between the topsheet 201 and the backsheet 202. and an absorbent core 203 .

Topsheet 201 is the portion of article 200 that contacts the wearer during use.

The topsheet 201 comprises segments of the composite web 1 according to one or more of the features described above.

Composite web 1 is cut to form composite web segments that are assembled into articles 200 .

A segment of the composite web comprises at least one formed segment 12S and one segment 11S of the first continuous web 11. FIG.

In one embodiment, shaped segment 12S has a shorter length than segment 11S.

In one embodiment, the width of shaped segment 12S is smaller than segment 11S.

For example, as shown in FIG. 8, segments 11S included in composite web 1 are positioned between shaped segments 12S (included in composite web 1) and absorbent core 203. FIG.

In one embodiment, not shown, the absorbent article 200 comprises an ADL (ie, liquid absorbent distribution layer) positioned between the segment 11S and the absorbent core 203. FIG.

Preferably, the ADLs are discrete and located on shaped segments 12S.

Advantageously, the presence of ADL allows liquid to be absorbed and directed to the absorbent core, thereby increasing the efficiency of the absorbent hygiene product 200 .

This specification relates to a method of manufacturing a composite web 1 . Composite web 1 is preferably used for manufacturing absorbent hygiene articles, such as article 200, for example.

This method essentially
supplying a first continuous web 11;
providing at least one shaped segment 12S of the second continuous web 12, the segment 12S having at least one protrusion 4 at least partially delimited by the base 5;
joining segment 12S to first web 11 at base 5 to define at least one cavity 7 between segment 12S and web 11 at projection 4;

In one embodiment, the method includes shaping segment 12L of second continuous web 12 to obtain shaped segment 12S.

Preferably, the method, in particular the shaping step, comprises embossing the segment 12L, i.e. imprinting or shaping a 3D pattern on the segment 12L.

The method used to shape the segments is commonly known as embossing.

For example, the molding step can basically comprise a first roller with a plurality of suction recesses on its periphery and a second roller with a plurality of teeth on its periphery that are substantially shaped to fit the plurality of suction recesses. rollers.

In one embodiment, the method includes providing a second continuous web 12 .

In one embodiment, the method includes cutting the second continuous web 12 at intervals to obtain segments 12L of the second web 12 .

Segment 12L is subsequently molded to obtain segment 12S with protrusion 4 delimited by base 5 .

The cutting and spacing step is, for example, a method known as slip and cut, i.e. a cutting and sliding method whereby (discrete) segments are cut from the web and then spaced apart. method can be used.

In one embodiment, joining at least one shaped segment 12S to first continuous web 11 includes welding segment 12S to web 11 at base 5 .

In one embodiment, welding segment 12S to web 11 is performed by ultrasonic welding or thermo-mechanical welding.

In one embodiment, joining segments 12S to continuous web 11 includes placing adhesive layer 8 between segments 12S and web 11 .

Joining segment 12S to web 11 allows fixing and maintaining the 3D pattern imparted to segment 12S by molding.

In one embodiment, a series of appropriately sized and spaced segments 12S are applied to web 11 .

In one embodiment, joining segments 12S to web 11 includes joining a series of discrete segments 12S to first continuous web 11 .

The first continuous web 11 is joined at the base 5 of the forming segment 12S and, in particular, opposite the projections 4 to define the forming portion 3 of the composite web 1 .

In one embodiment, the method includes forming a continuous web 12 and cutting and spacing the continuous web 12 to obtain segments 12S.

This specification relates, for example, to a forming unit 100 for producing a composite web of the type composite web 1 .

Unit 100 essentially comprises a manufacturing device 101 and an applicator device 110 .

Applicator device 110 is configured to join shaped segment 12S comprising pattern M comprising at least one protrusion 4 and one base 5 to first continuous web 11 .

The manufacturing device 101 for forming the segments 12S includes a forming device 102 for forming the pattern M and a cutting device 102 for cutting the second continuous web 12 to space at least one segment of the second continuous web 12 or a cutting and spacing device 103 configured to produce a plurality of segments 12L.

Device 102 is of the type known in the industry and is also called an embossing device.

In one embodiment, the device 102 is arranged downstream of the device 103 in the feeding direction V12 of the second web 12 so as to form the pattern M on the segment 12L.

In an embodiment not shown, device 102 is arranged upstream of device 103 in feed direction V12 so as to form pattern M in web 12 . Thus, cut and spaced segments 12S are already formed.

Apparatus 102 comprises a first drum 104 and a second drum 105 positioned relative to each other to define a through gap 106 for the passage of segment 12L or web 12 .

In the example shown in FIG. 5, the first drum 104 is rotatable clockwise about axis a4 and the second drum 105 is rotatable counterclockwise about axis a5 which is parallel to axis a4. is. For simplicity, drums 104 and 105 are considered substantially touching.

In one embodiment, the first drum 104 and the second drum 105 each comprise male and female portions shaped to mate with each other and form the pattern M (formed from the protrusions 4). .

The male-female portions present on drums 104 and 105 make it possible to form projections 4 on segment 12S.

The male and female parts are shaped according to the shape the protrusion 4 is intended to have.

Thus, in one embodiment, segment 12S is formed by conveying it between drums 104,105.

For example, the drums 104, 105 shown in FIG. 6 are shaped to form wavy projections 4.

In one embodiment, drum 104 has the pattern and drum 105 acts as an anvil.

Segment 12L advances through gap 106 and the outer surfaces of drums 104, 105 work together to lock segment 12L and provide a 3D pattern.

Apparatus 110 is configured to join segment 12S to web 11 at base 5 .

In one embodiment, the device 110 is arranged downstream of the manufacturing device 101 in the feeding direction V12S of the forming segments.

In one embodiment, as shown in the example of FIG. 5, the device 103 includes an anvil 107, preferably in the form of a drum, rotatable clockwise about axis a7 and counterclockwise about axis a8. A rotary knife 108 is rotatable and acts in conjunction with the anvil 107 .

Knife 108 cuts continuous web 12 to form appropriately spaced segments, for example, on anvil 107 itself, using known slip-and-cut methods not further described.

In one embodiment, device 103, and in particular anvil 107, is configured to space segments 12L apart.

Apparatus 110 comprises at least one applicator drum 111 in contact with first drum 104 or second drum 105 .

The applicator drum 111, in the example shown in FIG. 5, is clockwise rotatable about axis a11 and is arranged downstream of drum 105 in feed direction V12S.

In one embodiment, drum 111 is in contact with drum 105 to join segment 12S to web 11, i.e., join web 11 to base 5 of segment 12S, as shown schematically in FIG. allows you to run

In one embodiment, apparatus 110 comprises a welder 112 for welding formed segment 12S to first continuous web 11 .

In one embodiment, drum 112 and drum 105 are configured to weld segment 12S to first web 11 .

In one embodiment, the apparatus 110 comprises an adhesive dispenser 113 arranged downstream of the manufacturing apparatus 101 in the feed direction V12S of the molding segments. Dispenser 113 applies at least one adhesive layer 8 so that segments 12S can be joined to continuous web 11 by adhesive. For example, dispenser 113 applies adhesive to web 11 and/or segment 12S.

WO2016040091A1

The main features of the invention will become more apparent from the following detailed description, with reference to the accompanying drawings, which illustrate preferred, non-limiting embodiments of the invention.
Figure 2 shows a detail of a composite web according to the specification in schematic cross-section; FIG. 2 shows details of a composite web according to the disclosure in schematic perspective view; FIG. 2 shows details of a composite web according to the disclosure in schematic perspective view; 1 shows an absorbent article according to the specification in a schematic plan view; FIG. 1 shows in schematic front view a unit for forming a composite web according to the specification; FIG. FIG. 1 shows in schematic form details of a unit for forming a composite web according to the specification; FIG. 1 shows in schematic form details of a unit for forming a composite web according to the specification; 1 shows an absorbent article according to the specification in schematic cross-section.

Claims (23)

A composite web (1) comprising:
a first continuous web (11);
at least one shaped segment (12S) having at least one protrusion (4) and a base (5) at least partially delimiting said protrusion (4), said shaped segment (12S) being a second continuous obtained from a web (12) and joined by said base (5) to said first continuous web (11), said first continuous web (11) and said shaped segments (12S) at said projections (5) forming segments (12S) delimiting at least one cavity (7). Said shaped segment (12S) comprises a plurality of projections (4), said plurality of projections (4) delimited by a plurality of bases (5), said shaped segment (12S) comprising said plurality of bases (5 ) to said first continuous web (11) by means of said first continuous web (11) and said shaped segments (12S) bounding a plurality of cavities (7) at said plurality of projections (4). A composite web (1) according to claim 1, defined. A composite web (1) according to claim 2, wherein said plurality of protrusions (4) defines a pattern (M) on said shaped segment (12S). A composite web (1) according to any one of claims 1 to 3, comprising a plurality of shaped segments (12S), said plurality of shaped segments (12S) being joined to said first continuous web (11). 1). A composite web (1) according to any one of the preceding claims, wherein said shaped segments (12S) comprise protrusions (4) having the shape of cells. A composite web (1) according to any one of the preceding claims, wherein said shaped segments (12S) comprise projections (4) having an undulating shape. with at least one weld (9), preferably a thermal or thermomechanical or ultrasonic weld, said base (5) and said first continuous web being joined by said weld (9) A composite web (1) according to any one of claims 1 to 6, wherein at least one adhesive layer (8), said adhesive layer (8) being disposed between said base (5) of said shaped segment (12S) and said first continuous web (11); Composite web (1) according to any one of the preceding claims. A composite web (1) according to any one of the preceding claims, wherein said base (5) is outside said projections (4). An absorbent article (200) comprising:
a topsheet (201);
an impermeable backsheet (202);
an absorbent core (203) positioned between the topsheet (201) and the backsheet (202);
Said topsheet comprises segments of a composite web (1) according to any one of claims 1 to 9, said first continuous web (11) comprising said shaped segments (12S) and said absorbent core. (203), an absorbent article (200). A method for producing a composite web (1), in particular for producing absorbent sanitary articles, comprising:
supplying a first continuous web (11);
providing at least one shaped segment (12S) of the second continuous web (12), said shaped segment (12S) having at least one protrusion at least partially delimited by the base (5); (4); and
said shaped segment (12S) joined to said first continuous web (11) at said base (5) such that said shaped segment (12S) and said first continuous web (11) join at said projection (4); delimiting at least one cavity (7) between 12. A manufacturing method according to claim 11, comprising shaping a segment (12L) of said second continuous web (12) to obtain said shaped segment (12S). supplying said second continuous web (12);
13. The method of claim 12, further comprising cutting and spacing said second continuous web (12) to obtain said segments (12L) of said second continuous web. Said step of joining said shaped segment (12S) to said first continuous web (11) comprises welding said shaped segment (12S) to said first continuous web (11) at least at said base (5). 14. The manufacturing method according to any one of claims 11 to 13, comprising Said step of joining said shaped segment (12S) to said first continuous web (11) comprises forming an adhesive layer (8) between said shaped segment (12S) and said first continuous web (11). 15. A manufacturing method according to any one of claims 11 to 14, comprising the step of placing. 4. The step of joining said shaped segments (12S) to said first continuous web (11) comprises joining a series of discrete shaped segments (12S) to said first continuous web (11). Item 16. The production method according to any one of Items 11 to 15. A forming unit (100) for producing a composite web (1), comprising:
an applicator device (110) configured to join a shaped segment (12S) comprising a pattern (M) comprising at least one protrusion (4) and a base (5) to the first continuous web (11); ,
A manufacturing device (101) for manufacturing said shaped segments (12S), said forming device (102) for shaping said pattern (M) and cutting and spacing a second continuous web (12) a cutting and spacing device (103) configured to produce at least one segment (12L) or a plurality of segments (12L) of said second continuous web (12) by spacing the and
Said forming device (102) is adapted to cut and separate device (103) in feed direction (V12) of said second continuous web (12) to form said pattern (M) on said segment (12L). Positioned downstream or said forming device is adapted for said cutting and spacing in the feeding direction of said second continuous web (12) to form said pattern (M) in said second continuous web (12). located upstream of the device (103),
Said forming devices (102) are arranged relative to each other to define a through gap (106) for passage of said segments (12L) of said second web or said second continuous web (12). comprising one drum (104) and a second drum (105);
The applicator device (110) is configured to join the shaped segment (12S) at the base (5) to the first continuous web (11), the applicator device (110) comprising: A forming unit (100) arranged downstream of said production device (101) in the feed direction (V12S) of said forming segments. 18. Molding unit according to claim 17, wherein said cutting and spacing device (103) comprises an anvil (107) and a rotating knife (108) acting in conjunction with said anvil (107). 18. Claim 17 or wherein the cutting and spacing device (103), in particular the anvil (107), is configured to space the segments (12L) of the second web (12) apart. 19. Molding unit according to 18. 20. Any one of claims 17 to 19, wherein the applicator device (110) comprises at least one applicator drum (111) in contact with the first drum (104) or the second drum (105). A molding unit as described in . 21. The applicator device (110) according to any one of claims 17 to 20, wherein said applicator device (110) comprises a welder (112) for welding said shaped segment (12S) to said first continuous web (11). molding unit. Said applicator device (110) comprises an adhesive dispenser (113), said adhesive dispenser (113) being arranged downstream of said manufacturing device (101) in said feeding direction (V12S) of said molding segments. 22. A molding unit according to any one of claims 17 to 21, wherein the molding unit is Said first drum (104) and said second drum (105) each comprise a male portion and a female portion, said male portion and said female portion being formed on said shaping segment (12S) with said pattern (M). 23. A molding unit according to any one of claims 17 to 22, which are shaped to fit each other for molding a .

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